在AngularJS控制器之间共享数据

我正在尝试跨控制器共享数据。用例是一种多步骤形式，在一个输入中输入的数据稍后将用于原始控制器之外的多个显示位置。下面和jsfiddle中的代码。

HTML

<div ng-controller="FirstCtrl">
    <input type="text" ng-model="FirstName"><!-- Input entered here -->
    <br>Input is : <strong>{{FirstName}}</strong><!-- Successfully updates here -->
</div>

<hr>

<div ng-controller="SecondCtrl">
    Input should also be here: {{FirstName}}<!-- How do I automatically updated it here? -->
</div>

// declare the app with no dependencies
var myApp = angular.module('myApp', []);

// make a factory to share data between controllers
myApp.factory('Data', function(){
    // I know this doesn't work, but what will?
    var FirstName = '';
    return FirstName;
});

// Step 1 Controller
myApp.controller('FirstCtrl', function( $scope, Data ){

});

// Step 2 Controller
myApp.controller('SecondCtrl', function( $scope, Data ){
    $scope.FirstName = Data.FirstName;
});

任何帮助都非常感激。

当前回答

最简单的解决方案:

我使用了AngularJS服务。

我已经创建了一个名为SharedDataService的AngularJS服务。

myApp.service('SharedDataService', function () {
     var Person = {
        name: ''

    };
    return Person;
});

步骤2:创建两个控制器并使用上面创建的服务。

//First Controller
myApp.controller("FirstCtrl", ['$scope', 'SharedDataService',
   function ($scope, SharedDataService) {
   $scope.Person = SharedDataService;
   }]);

//Second Controller
myApp.controller("SecondCtrl", ['$scope', 'SharedDataService',
   function ($scope, SharedDataService) {
   $scope.Person = SharedDataService;
   }]);

步骤3:在视图中使用已创建的控制器。

<body ng-app="myApp">

<div ng-controller="FirstCtrl">
<input type="text" ng-model="Person.name">
<br>Input is : <strong>{{Person.name}}</strong>
</div>

<hr>

<div ng-controller="SecondCtrl">
Input should also be here: {{Person.name}}
</div>

</body>

要查看此问题的工作解决方案，请按下面的链接

https://codepen.io/wins/pen/bmoYLr

. html文件:

<!DOCTYPE html>
<html>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.9/angular.min.js"></script>

<body ng-app="myApp">

  <div ng-controller="FirstCtrl">
    <input type="text" ng-model="Person.name">
    <br>Input is : <strong>{{Person.name}}</strong>
   </div>

<hr>

  <div ng-controller="SecondCtrl">
    Input should also be here: {{Person.name}}
  </div>

//Script starts from here

<script>

var myApp = angular.module("myApp",[]);
//create SharedDataService
myApp.service('SharedDataService', function () {
     var Person = {
        name: ''

    };
    return Person;
});

//First Controller
myApp.controller("FirstCtrl", ['$scope', 'SharedDataService',
    function ($scope, SharedDataService) {
    $scope.Person = SharedDataService;
    }]);

//Second Controller
myApp.controller("SecondCtrl", ['$scope', 'SharedDataService',
    function ($scope, SharedDataService) {
    $scope.Person = SharedDataService;
}]);

</script>


</body>
</html>

2018-10-11 04:19:32

其他回答

有多种方法可以做到这一点。

事件——已经解释得很好了。 UI路由器-上面解释了。 Service -使用上面显示的更新方法坏——注意变化。另一种父-子方法而不是发射和广播-

<superhero flight speed strength> Superman is here! </superhero>
<superhero speed> Flash is here! </superhero>

app.directive('superhero', function(){
    return {
        restrict: 'E',
        scope:{}, // IMPORTANT - to make the scope isolated else we will pollute it in case of a multiple components.
        controller: function($scope){
            $scope.abilities = [];
            this.addStrength = function(){
                $scope.abilities.push("strength");
            }
            this.addSpeed = function(){
                $scope.abilities.push("speed");
            }
            this.addFlight = function(){
                $scope.abilities.push("flight");
            }
        },
        link: function(scope, element, attrs){
            element.addClass('button');
            element.on('mouseenter', function(){
               console.log(scope.abilities);
            })
        }
    }
});
app.directive('strength', function(){
    return{
        require:'superhero',
        link: function(scope, element, attrs, superHeroCtrl){
            superHeroCtrl.addStrength();
        }
    }
});
app.directive('speed', function(){
    return{
        require:'superhero',
        link: function(scope, element, attrs, superHeroCtrl){
            superHeroCtrl.addSpeed();
        }
    }
});
app.directive('flight', function(){
    return{
        require:'superhero',
        link: function(scope, element, attrs, superHeroCtrl){
            superHeroCtrl.addFlight();
        }
    }
});

2017-04-27 06:37:00

有许多方法可以在控制器之间共享数据

使用服务使用美元的状态。去服务使用stateparams 使用rootscope

各方法说明:

I am not going to explain as its already explained by someone using $state.go $state.go('book.name', {Name: 'XYZ'}); // then get parameter out of URL $state.params.Name; $stateparam works in a similar way to $state.go, you pass it as object from sender controller and collect in receiver controller using stateparam using $rootscope (a) sending data from child to parent controller $scope.Save(Obj,function(data) { $scope.$emit('savedata',data); //pass the data as the second parameter }); $scope.$on('savedata',function(event,data) { //receive the data as second parameter }); (b) sending data from parent to child controller $scope.SaveDB(Obj,function(data){ $scope.$broadcast('savedata',data); }); $scope.SaveDB(Obj,function(data){`enter code here` $rootScope.$broadcast('saveCallback',data); });

2016-08-24 14:42:30

一个简单的解决方案是让你的工厂返回一个对象，让你的控制器使用同一个对象的引用:

JS:

// declare the app with no dependencies
var myApp = angular.module('myApp', []);

// Create the factory that share the Fact
myApp.factory('Fact', function(){
  return { Field: '' };
});

// Two controllers sharing an object that has a string in it
myApp.controller('FirstCtrl', function( $scope, Fact ){
  $scope.Alpha = Fact;
});

myApp.controller('SecondCtrl', function( $scope, Fact ){
  $scope.Beta = Fact;
});

HTML:

<div ng-controller="FirstCtrl">
    <input type="text" ng-model="Alpha.Field">
    First {{Alpha.Field}}
</div>

<div ng-controller="SecondCtrl">
<input type="text" ng-model="Beta.Field">
    Second {{Beta.Field}}
</div>

演示:http://jsfiddle.net/HEdJF/

当应用程序变得更大、更复杂、更难测试时，你可能不想以这种方式从工厂中暴露整个对象，而是通过getter和setter来提供有限的访问:

myApp.factory('Data', function () {

    var data = {
        FirstName: ''
    };

    return {
        getFirstName: function () {
            return data.FirstName;
        },
        setFirstName: function (firstName) {
            data.FirstName = firstName;
        }
    };
});

使用这种方法，由消费控制器来更新工厂的新值，并观察变化以获得它们:

myApp.controller('FirstCtrl', function ($scope, Data) {

    $scope.firstName = '';

    $scope.$watch('firstName', function (newValue, oldValue) {
        if (newValue !== oldValue) Data.setFirstName(newValue);
    });
});

myApp.controller('SecondCtrl', function ($scope, Data) {

    $scope.$watch(function () { return Data.getFirstName(); }, function (newValue, oldValue) {
        if (newValue !== oldValue) $scope.firstName = newValue;
    });
});

HTML:

<div ng-controller="FirstCtrl">
  <input type="text" ng-model="firstName">
  <br>Input is : <strong>{{firstName}}</strong>
</div>
<hr>
<div ng-controller="SecondCtrl">
  Input should also be here: {{firstName}}
</div>

演示:http://jsfiddle.net/27mk1n1o/

2014-02-20 21:42:50

最简单的解决方案:

我使用了AngularJS服务。

我已经创建了一个名为SharedDataService的AngularJS服务。

myApp.service('SharedDataService', function () {
     var Person = {
        name: ''

    };
    return Person;
});

步骤2:创建两个控制器并使用上面创建的服务。

//First Controller
myApp.controller("FirstCtrl", ['$scope', 'SharedDataService',
   function ($scope, SharedDataService) {
   $scope.Person = SharedDataService;
   }]);

//Second Controller
myApp.controller("SecondCtrl", ['$scope', 'SharedDataService',
   function ($scope, SharedDataService) {
   $scope.Person = SharedDataService;
   }]);

步骤3:在视图中使用已创建的控制器。

<body ng-app="myApp">

<div ng-controller="FirstCtrl">
<input type="text" ng-model="Person.name">
<br>Input is : <strong>{{Person.name}}</strong>
</div>

<hr>

<div ng-controller="SecondCtrl">
Input should also be here: {{Person.name}}
</div>

</body>

要查看此问题的工作解决方案，请按下面的链接

https://codepen.io/wins/pen/bmoYLr

. html文件:

<!DOCTYPE html>
<html>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.9/angular.min.js"></script>

<body ng-app="myApp">

  <div ng-controller="FirstCtrl">
    <input type="text" ng-model="Person.name">
    <br>Input is : <strong>{{Person.name}}</strong>
   </div>

<hr>

  <div ng-controller="SecondCtrl">
    Input should also be here: {{Person.name}}
  </div>

//Script starts from here

<script>

var myApp = angular.module("myApp",[]);
//create SharedDataService
myApp.service('SharedDataService', function () {
     var Person = {
        name: ''

    };
    return Person;
});

//First Controller
myApp.controller("FirstCtrl", ['$scope', 'SharedDataService',
    function ($scope, SharedDataService) {
    $scope.Person = SharedDataService;
    }]);

//Second Controller
myApp.controller("SecondCtrl", ['$scope', 'SharedDataService',
    function ($scope, SharedDataService) {
    $scope.Person = SharedDataService;
}]);

</script>


</body>
</html>

2018-10-11 04:19:32

我不喜欢使用$watch。您可以只分配数据，而不是将整个服务分配给控制器的作用域。

JS:

var myApp = angular.module('myApp', []);

myApp.factory('MyService', function(){
  return {
    data: {
      firstName: '',
      lastName: ''
    }
    // Other methods or objects can go here
  };
});

myApp.controller('FirstCtrl', function($scope, MyService){
  $scope.data = MyService.data;
});

myApp.controller('SecondCtrl', function($scope, MyService){
   $scope.data = MyService.data;
});

HTML:

<div ng-controller="FirstCtrl">
  <input type="text" ng-model="data.firstName">
  <br>Input is : <strong>{{data.firstName}}</strong>
</div>
<hr>
<div ng-controller="SecondCtrl">
  Input should also be here: {{data.firstName}}
</div>

或者，您可以使用直接方法更新服务数据。

JS:

// A new factory with an update method
myApp.factory('MyService', function(){
  return {
    data: {
      firstName: '',
      lastName: ''
    },
    update: function(first, last) {
      // Improve this method as needed
      this.data.firstName = first;
      this.data.lastName = last;
    }
  };
});

// Your controller can use the service's update method
myApp.controller('SecondCtrl', function($scope, MyService){
   $scope.data = MyService.data;

   $scope.updateData = function(first, last) {
     MyService.update(first, last);
   }
});

2014-08-05 18:11:12

在AngularJS控制器之间共享数据

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